Photogates allow for extremely accurate timing of events within physics experiments, for studying free fall, air track collisions, pendulum periods, the speed of a rolling object, among other things. The Vernier Photogate includes an accessory rod for mounting to a ring stand.The gate has an input port so multiple gates can be connected in a daisy-chain configuration with up to four gates going to a single interface channel.The laser gate mode requires the addition of a common pen laser, which is directed into the laser port. The laser may be some distance from the gate, so that you can measure the speed of larger objects such as a rocket, model car, or even a real automobile.
A photogate and timer are considered accurate and precise because they use light beams to detect motion and measure time intervals with high resolution. The digital nature of the timer minimizes human error and provides consistent measurements, while the rapid response of the photogate allows for quick detection of objects passing through. This combination results in reliable data that can be replicated in multiple trials, enhancing both accuracy and precision in experiments.
Dropping the picket fence from a higher height above the photogate would not change the parameters you measured, assuming the initial velocity of the picket fence remains constant. The time it takes for the picket fence to pass through the photogate and the acceleration due to gravity acting on the picket fence would remain the same. The height from which the picket fence is dropped would only affect the initial velocity of the picket fence, not the parameters being measured.
V = 10cm/2s = 5cm/s Therefore, the cart's speed is 5cm/s.
Distance refers to the total path travelled by the car from start to finish, while position refers to the specific location of the car at a given moment. Distance is a scalar quantity that does not have a direction, while position is a vector quantity that includes both magnitude and direction.